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40QSS018DS
Air volume m3 /h(CFM)
1800(1059)
1700(1000)
1600(941)
1500(882)
1400(823)
1300(765)
1200(706)
1100(647)
1000(588)
Rated Point
900(529)
800(471)
700(412)
600(353)
Middle
500(294)
Low
400(235)
300(176)
200(118)
100(59)
0
10
20 25 30
40 50
(0.10)(0.12) (0.16)(0.20) (0.24) (0.28)(0.32)(0.36)
(0.04)
(0.08)
External static pressure pa （ in.w.c ）
Air volume m3 /h(CFM)
1800(1059)
1700(1000)
1600(941)
1500(882)
1400(823)
1300(765)
1200(706)
1100(647)
1000(588)
900(529)
800(471)
700(412)
600(353)
500(294)
400(235)
300(176)
200(118)
100(59)
0
10
20 25 30
40 50
(0.10)(0.12) (0.16)(0.20) (0.24) (0.28)(0.32)(0.36)
(0.04)
(0.08)
External static pressure pa （ in.w.c ）
SP1
Limit
High
60 70 80 90 100
110
120130 140 150160
(
0.40
) (
0.44
) (0.48) (0.52) (0.56) (0.60) (0.64)
SP3
Limit
Rated Point
High
Middle
Low
60 70 80 90 100
110
120130 140 150160
0.40
0.44
(
) (
) (0.48) (0.52) (0.56) (0.60) (0.64)
Air volume m3 /h(CFM)
1800(1059)
1700(1000)
1600(941)
1500(882)
1400(823)
1300(765)
1200(706)
1100(647)
1000(588)
900(529)
800(471)
700(412)
600(353)
500(294)
400(235)
300(176)
200(118)
100(59)
0
10
20 25 30
40 50
(0.10)(0.12) (0.16)(0.20) (0.24) (0.28)(0.32)(0.36)
(0.04)
(0.08)
External static pressure pa （ in.w.c ）
Air volume m3 /h(CFM)
1800(1059)
1700(1000)
1600(941)
1500(882)
1400(823)
1300(765)
1200(706)
1100(647)
1000(588)
900(529)
800(471)
700(412)
600(353)
500(294)
400(235)
300(176)
200(118)
100(59)
0
10
20 25 30
(0.10)(0.12) (0.16)(0.20) (0.24) (0.28)(0.32)(0.36)
(0.04)
(0.08)
External static pressure pa （ in.w.c ）
45
SP2
Limit
Rated Point
High
Middle
Low
60 70 80 90 100
110
120130 140 150160
(
0.40
) (
0.44
) (0.48) (0.52) (0.56) (0.60) (0.64)
SP4
Rated Point
High
Low
Middle
40 50
60 70 80 90 100
110
120130 140 150160
(
0.40
) (
0.44
) (0.48) (0.52) (0.56) (0.60) (0.64)
Limit
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